1/* 2 * This file is part of wl1271 3 * 4 * Copyright (C) 1998-2009 Texas Instruments. All rights reserved. 5 * Copyright (C) 2008-2009 Nokia Corporation 6 * 7 * Contact: Luciano Coelho <luciano.coelho@nokia.com> 8 * 9 * This program is free software; you can redistribute it and/or 10 * modify it under the terms of the GNU General Public License 11 * version 2 as published by the Free Software Foundation. 12 * 13 * This program is distributed in the hope that it will be useful, but 14 * WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 21 * 02110-1301 USA 22 * 23 */ 24 25#ifndef __RX_H__ 26#define __RX_H__ 27 28#include <linux/bitops.h> 29 30#define WL1271_RX_MAX_RSSI -30 31#define WL1271_RX_MIN_RSSI -95 32 33#define SHORT_PREAMBLE_BIT BIT(0) 34#define OFDM_RATE_BIT BIT(6) 35#define PBCC_RATE_BIT BIT(7) 36 37#define PLCP_HEADER_LENGTH 8 38#define RX_DESC_PACKETID_SHIFT 11 39#define RX_MAX_PACKET_ID 3 40 41#define NUM_RX_PKT_DESC_MOD_MASK 7 42 43#define RX_DESC_VALID_FCS 0x0001 44#define RX_DESC_MATCH_RXADDR1 0x0002 45#define RX_DESC_MCAST 0x0004 46#define RX_DESC_STAINTIM 0x0008 47#define RX_DESC_VIRTUAL_BM 0x0010 48#define RX_DESC_BCAST 0x0020 49#define RX_DESC_MATCH_SSID 0x0040 50#define RX_DESC_MATCH_BSSID 0x0080 51#define RX_DESC_ENCRYPTION_MASK 0x0300 52#define RX_DESC_MEASURMENT 0x0400 53#define RX_DESC_SEQNUM_MASK 0x1800 54#define RX_DESC_MIC_FAIL 0x2000 55#define RX_DESC_DECRYPT_FAIL 0x4000 56 57/* 58 * RX Descriptor flags: 59 * 60 * Bits 0-1 - band 61 * Bit 2 - STBC 62 * Bit 3 - A-MPDU 63 * Bit 4 - HT 64 * Bits 5-7 - encryption 65 */ 66#define WL1271_RX_DESC_BAND_MASK 0x03 67#define WL1271_RX_DESC_ENCRYPT_MASK 0xE0 68 69#define WL1271_RX_DESC_BAND_BG 0x00 70#define WL1271_RX_DESC_BAND_J 0x01 71#define WL1271_RX_DESC_BAND_A 0x02 72 73#define WL1271_RX_DESC_STBC BIT(2) 74#define WL1271_RX_DESC_A_MPDU BIT(3) 75#define WL1271_RX_DESC_HT BIT(4) 76 77#define WL1271_RX_DESC_ENCRYPT_WEP 0x20 78#define WL1271_RX_DESC_ENCRYPT_TKIP 0x40 79#define WL1271_RX_DESC_ENCRYPT_AES 0x60 80#define WL1271_RX_DESC_ENCRYPT_GEM 0x80 81 82/* 83 * RX Descriptor status 84 * 85 * Bits 0-2 - error code 86 * Bits 3-5 - process_id tag (AP mode FW) 87 * Bits 6-7 - reserved 88 */ 89#define WL1271_RX_DESC_STATUS_MASK 0x03 90 91#define WL1271_RX_DESC_SUCCESS 0x00 92#define WL1271_RX_DESC_DECRYPT_FAIL 0x01 93#define WL1271_RX_DESC_MIC_FAIL 0x02 94#define WL1271_RX_DESC_DRIVER_RX_Q_FAIL 0x03 95 96#define RX_MEM_BLOCK_MASK 0xFF 97#define RX_BUF_SIZE_MASK 0xFFF00 98#define RX_BUF_SIZE_SHIFT_DIV 6 99/* If set, the start of IP payload is not 4 bytes aligned */ 100#define RX_BUF_UNALIGNED_PAYLOAD BIT(20) 101 102enum { 103 WL12XX_RX_CLASS_UNKNOWN, 104 WL12XX_RX_CLASS_MANAGEMENT, 105 WL12XX_RX_CLASS_DATA, 106 WL12XX_RX_CLASS_QOS_DATA, 107 WL12XX_RX_CLASS_BCN_PRBRSP, 108 WL12XX_RX_CLASS_EAPOL, 109 WL12XX_RX_CLASS_BA_EVENT, 110 WL12XX_RX_CLASS_AMSDU, 111 WL12XX_RX_CLASS_LOGGER, 112}; 113 114struct wl1271_rx_descriptor { 115 __le16 length; 116 u8 status; 117 u8 flags; 118 u8 rate; 119 u8 channel; 120 s8 rssi; 121 u8 snr; 122 __le32 timestamp; 123 u8 packet_class; 124 u8 hlid; 125 u8 pad_len; 126 u8 reserved; 127} __packed; 128 129void wl12xx_rx(struct wl1271 *wl, struct wl12xx_fw_status *status); 130u8 wl1271_rate_to_idx(int rate, enum ieee80211_band band); 131 132#endif 133